Quote Originally Posted by gkathellar View Post
I seem to recall an argument that Rainbow Servant doesn't work for wizard - something about the text not technically allowing you to record the spells in your book, or not being able to prepare the spells for some reason or another. I can't actually find the supporting text for this, though, so it's even more or a moot point than it would be otherwise.
It says they can "learn and cast spells on the cleric spell list", for wizards learning a spell involves writing it into your spellbook, so that's not a correct reading. There's literally 0 reading I can see that would prevent a duskblade from benefitting from from it as well. Ask your DM why wizards gain the benefit but duskblades do not? Ask him if a sorcerer would benefit? If a sorcerer would, then duskblades 100% should, since they practically learn and cast spells as sorcerers do.